Speed control for coutboard motor boats



Feb. 25, 1941. W.E. GURR SPEED CONTROL FOR OUTBOARD MOTOR BOATS Filed July 15, 1939 2 Sheets-Sheet 1 W E; Gu R R Attorneys .Feb. 25, 1941. w. E. GURR SPEED CONTROL FOR OUTBOARD MOTOR BOATS Filed July 15, 1959 2 Sheets-Sheet 2 Inventor I3. GU R R A iiomeys Fatented Feb. 25, 1 941 PATENT OFFICE SPEED CON TROL FOR OUTBOARD MOTOR I BOATS William E. Gurr, Chelan, Wash. Application-July 15, 1939, Serial No.'284', 745

4 Claims.

This invention relates to outboard motors, and more particularly to an attachment for controlling the speed of the boat, an advantage which is very useful when trolling for fish; and" among the objects of the invention is to improve, generally; upon attachments of this character now generally known and used.

The invention together with its objects and I advantages will be best understood from a, study of. the following description taken in connection with the accompanying drawings, wherein Figure l is a side elevational view illustrating the application of the speed control device to an outboard motor.

Figure 2 is a' rear view of the outboard motor withthe attachment applied thereto.

Figures 3 and 4 are horizontal detail sectional views taken substantially on the lines 33 and 4-4 respectively, of Figure 1. l

Figure 5 is a detail elevational view on a large scale showing certain features hereinafter more fully referred to, and V o i Figure 6 is a detail elevational view of the blades forming part of the attachment.

Referring more in detail to the drawings it will be seen that the speed controlling attachment indicated generally by the reference numeral 5 comprises an attaching plate 6 havingcarried by the plate 6 and equipped with wing nuts [6. Thus it will be seen that the attachment may be readily and quickly mounted on the outboard motor.

The plate 6 at the free end thereof is provided with an integral bearing sleeve I! in which is journalled a hollow shaft I8. The shaft I8 is equipped on the upper end thereof with a stop collar [9, and intermediate its ends with a stop collor w.

Accommodated within the shaft [8 is a shaft 20 that on its upper end is provided with a collar 2|. Interposed between the collars l9 and 2| is a washer 22, as clearly shown in Figure 5.

Mounted on the lower end of the shaft l8 to rotate therewith is a speed retarding blade 23 while mounted on the lower end of the shaft 20 to rotate therewith is a complemental speed retarding blade 24.

Extending from the plate 6 and disposed at anangle thereto is a guide arm 25-on which is mounted a slide 26.

The slide 26 is provided with a keeper pin 21 that is engageable in a selected one of a series of openings 28 provided in the arm 25 for securing the slide 26 at the desired position of adjustment on the arm 25. i

Carried by the slide 26 is a stud 29 which serves as a pivotal connection between the slide 26 and a link 30 that is pivotally connected'to an arm 3| formed integral with and extending from the collar l9.

The stud 29 also provides a pivotal connection between the slide 26 anda link 32 that is pivoted to an arm arm '33 carried by the collar 2|.

Interposed between the ends of the links 30' and 32 pivotally engaging the stud 29 is a collar orwasher 34. l o The stud 29 also-servesto anchor to the slide 26 one end of a leaf spring 35, said spring 35 having its end thereof suitably connected with the pin Zlacting to normally urge the pin downtheopenings28. g i

From the above it will be apparent that-sliding movement of the slide 26 on the arm 29 will, through the medium of links 30, 32 be imparted. to the shafts l8 and. 20 for rotating the shafts in the proper direction to position the speed retarding blades 23 and 24 at the desired angle of adjustment whereby the operator of the motor boat is enabled to control the same from full speed ahead to any desired lower speed, an advantage which is very useful when trolling for war 'dl y into engagement vzith a selected one of fish, and under other circumstances which will readily present themselves to the reader hereof. Obviously by engaging the pin 21 with the proper opening 23 the blades 23 and 24 will be thereby secured at the desired position of adjustment. Several positions of adjustment for the blades 23 and 24' are suggested by broken and full lines respectively, in Figure 3.

From the above it will also be apparent that the speed control attachment may be easily and quickly applied to and removed from the outboard motor, and when in use will in nowise interfere with the operation of the propeller of the motor.

It is thought that a clear understanding of the construction, utility and advantages of an invention of this character will be had without a more detailed description.

Having thus described the invention, what is claimed as new is:

1. In a speed control mechanism for use with an outboard motor, a mounting plate provided with a clamp adapted to engage intermediate parts of an outboard motor, said plate being provided with a bearing, a hollow shaft having an end journalled in said bearing, a second shaft journalled within said hollow shaft, speed retarding blades mounted on the lower ends of said shafts, a guide arm extending laterally from said plate, a slide mounted on said plate, and link means operatively connecting said slide with said shafts for transmitting movement of the slide to the shafts for placing said blades at the desired position of adjustment, and complemental means on said guide arm and said slide for secur ing the latter in the desired position of adjustment on the guide arm.

2. A speed control attachment for'outboard motors, said attachment comprising an'attaching plate having an integral clamping plate provided for engaging intermediate parts of an outboard motor, a complemental clamping plate hinged to said integral plate for cooperation therewith for securing said attaching plate to the outboard motor, means for securing the hinged complemental clamping plate in cooperative clamping position with the first named clamping plate, inner and outer shafts journalled at one end thereof on said attaching plate, coacting speed retarding blades mounted on the free ends of said shafts, collars on the first named ends of said shafts and provided with arms, a guide arm extending at an angle from said attaching plate, a slide on said guide arm, and link members pivotally connecting the arms of said collars with saidslide for transmitting movement of the slide to the shafts for simultaneously rotating the shafts in reverse directions relative to one another for positioning said blades at the desired position of adjustment.

3. A speed control attachment for outboard motors, said attachment comprising a body plate having an integral clamping plate provided for engaging intermediate part of an outboard motor, a complemental clamping plate hinged to said integral plate for cooperation therewith for securing said body plate to the outboard motor, means for securing the hinged complemental clamping plate in cooperative clamping position with the first named clamping plate, inner and outer shafts journalled at one end thereof on said body plate, coacting speed retarding blades mounted on the free ends of said shafts, collars on the first named ends of said shafts and provided with arms, a guide arm extending at an angle from said body plate, a slide on said guide arm, and link members pivotally connecting the arms of said collars with said slide for transmitting movement of the slide to the shafts for simultaneously rotating the shafts in reverse directions relative to one another for positioning said blades at the desired position of adjustment, said guide arm being provided with a longitudinal series of spaced apertures, and a spring pressed pin carried by said slide and engageable with a selected one of said apertures for securing the slide in the desired position of adjustment on said guide arm.

4. A speed control attachment for an outboard motor having a propeller, comprising a vertically arranged supporting plate, means for detachably connecting said plate to an intermediate part of the outboard motor, a tubular partat the rear edge of the supporting plate forming a bearing, a hollow shaft journaled in the bearing, a second shaft passing through the hollow shaft and journaled therein, arms connected to the upper ends of said shafts, blades connected with the lower ends of said shafts and said shafts holding the blades in rear of'the propeller of the motor, a manually operated slide on the supporting plate at the top thereof and links connecting the slide with the arms of the shafts for transmitting movement of the slide to the shafts for simultaneously rotating the shafts in reversed direction relative to one another for pcsitioning said blades at the desired position of adjustment in rear of the propeller for controlling the flow of Water therefrom.

W. E. GURR. 

